03 January - Swiss - Airbus A321
‘A Swiss International Airlines Airbus A321-200, registration HB-IOH performing flight LX-257 from Tel Aviv (Israel) to Zurich (Switzerland) with 66 passengers, was descending towards Zurich when the crew declared PAN PAN reporting smoke in the cabin.’
http://avherald.com/h?article=4f2b34f7&opt=0

05 January - Finnair - Airbus A350
‘A Finnair Airbus A350-900, registration OH-LWH performing flight AY-141 from Helsinki (Finland) to Bangkok (Thailand), was climbing out of Helsinki's runway 15 when the crew stopped the climb at 4000 feet due to smoke developing in the cabin. The aircraft returned to Helsinki for a safe landing on runway 22L about 12 minutes after departure.’
http://avherald.com/h?article=4f2b44d6&opt=0

07 January - Alaska Airlines - Airbus A320
‘An Alaska Airlines Airbus A320-200, registration N835VA performing flight AS-338 from Seattle,WA to San Jose,CA (USA) with 44 passengers, was on approach to San Jose when a strong chemical odour developed in the back of the aircraft. Two flight attendants working in the aft galley started to feel unwell. The aircraft continued for a landing on San Jose's runway 12R.’
http://avherald.com/h?article=4f32374f&opt=0

18 January - PSA - Canadair CRJ-900
‘A PSA Airlines Canadair CRJ-900 on behalf of American Airlines, registration N572NN performing flight AA-5144 from Providence,RI to Charlotte,NC (USA), was enroute at FL280 about 20nm east of Washington Dulles,DC (USA) when the crew decided to divert to Dulles Airport reporting smoke in the cabin. The aircraft landed safely on runway 01C about 18 minutes later.’
http://avherald.com/h?article=4f2e622f&opt=0

19 January - Update from NORRA AT72 Fume Event on 30 October 2021
‘1) The oily smell of smoke in the cockpit was due to leaks in an oil sealing in the left engine bearings. Oil was thus allowed to seep from the engine into an area, where air also enters the aircraft systems. The leak was partly to an air switching valve's wear (editorial note: explanation found in the analysis: the air switching valve permits air to seal the bearings from either the low or high pressure side depending on engine speed).

Smoke or smell of smoke in an aircraft in flight is some of the most critical phenomenas depending on its intensity. ATR-72-500 aircraft and others using similiar engines wear and tear on Air Switching Valves can lead to different oil spills. The Air Switching Valve is not part of the time controlled spare parts of the engine.

2) The cockpit smelled of oil on several occasions during the flight. The crew did not initiate the emergency checklists measures in accordance with the appearance of smoke or smell of smoke prior to the final approach.’
http://avherald.com/h?article=4f05e561&opt=0

21 January - EasyJet- Airbus A320
‘An Easyjet Europe Airbus A320-200, registration OE-IJI performing flight U2-4441 from Lyon (France) to Porto (Portugal), was in the initial descent towards Porto leaving FL390 when the crew noticed some unidentified odour in the cabin and cockpit prompting the flight crew to don their oxygen masks and work the related checklists, the smell however peristed, cabin crew felt abnormal taste and nausea until after landing on Porto's runway 17 about 30 minutes later. Once the doors were opened, the smell and symptoms dissipated.’
http://avherald.com/h?article=4f3875ee&opt=0

22 January - EasyJet- Airbus A320
‘An Easyjet Airbus A320-200N, registration G-UZHR performing flight U2-8297 from London Gatwick,EN (UK) to Innsbruck (Austria) with 146 passengers and 6 crew, was on approach to Innsbruck descending through about 10,500 feet already in the Inn Valley east of Innsbruck when the crew stopped the descent at 10,500 feet, climbed to FL160 and diverted to Friedrichshafen (Germany) for a safe landing on runway 24 about one hour later, where emergency services were awaiting and checking the aircraft for smoke in the cockpit.’
http://avherald.com/h?article=4f385c39&opt=0

25 January - Delta - Boeing 767
‘A Delta Airlines Boeing 767-300, registration N185DN performing flight DL-439 from New York JFK,NY to Los Angeles,CA (USA), was enroute at FL380 about 50nm east of Buffalo,NY (USA) when the crew decided to divert to Buffalo reporting smell of smoke in the cockpit. During the approach the crew advised, there was no smoke or fumes around, they would clear the runway and taxi to the apron. The aircraft landed safely on runway 23 about 20 minutes after leaving FL380, vacated the runway and stopped on the taxiway for an inspection by emergency services. The aircraft subsequently taxied to the apron.’
http://avherald.com/h?article=4f3b5803&opt=0

27 January - Southwest - Boeing 737
‘A Southwest Airlines Boeing 737-700, registration N425LV performing flight WN-2988 from Los Angeles,CA to Saint Louis,MO (USA) with 125 people on board, was climbing out of Los Angeles' runway 25R when the crew stopped the climb at about 10,000 feet reporting smoke in the aft galley. The aircraft returned to Los Angeles landing on runway 06R in opposite direction to the active runways about 15 minutes after departure.’
http://avherald.com/h?article=4f40e852&opt=0

31 January - Swiss - Airbus A321
‘A Swiss International Airlines Airbus A321-200N, registration HB-JPB performing flight LX-317 from London Heathrow,EN (UK) to Zurich (Switzerland), was on approach to Zurich when the crew reported smoke in the cockpit. The aircraft continued for a safe landing on runway 34, vacated the runway and stopped on the parallel taxiway. Emergency services checked the aircraft and subsequently followed the aircraft to the apron.’
http://avherald.com/h?article=4f3f1a65&opt=0

03 February - EasyJet- Airbus A320
‘An Easyjet Europe Airbus A320-200, registration OE-ICU performing flight U2-8418 from Lyon (France) to London Gatwick,EN (UK), was on approach to Gatwick descending through about 6000 feet, the crew was slowing the aircraft and extending the first flaps, the crew noticed a very strong odour of wet socks on board, the flight crew donned their oxygen masks. Descending through about 2000 feet the cabin altitude began to rise rapidly through 5000 feet prompting the crew to perform a manual depressurization of the aircraft. The aircraft landed on Gatwick's runway 26L about 10 minutes after the first detection of the fumes. The crew remained on oxygen until after arriving at the stand as the fumes persisted, the aircraft was finally ventilated on the stand with doors and cockpit windows open and the APU shut down.’
http://avherald.com/h?article=4f434250&opt=0

Aircraft Contaminated Cabin Air - Aerotoxic Syndrome Science & Experts:
http://www.unfiltered.vip/science.html

Concerns over Medical Conditions at Altitude:
‘You may also want to read up on vaccination and thrombosis in connection with i.e. organophosphate exposure and intoxication (and other named substances). It is well known, that thrombosis (DVT and PE) can be a risk factor’:
http://www.unfiltered.vip/covid-concerns.html