Point 5: Wood smoke produces PM2.5 particulates which are smaller than the particulates that coal burning produces. Since PM2.5 is the perfect size to infiltrate human lungs and circulatory systems, the wood smoke has more negative health impacts on humans than the same amount of coal smoke. And since wood smoke is produced where people spend most of their time, their homes, wood smoke has more time to affect people, than coal smoke emitted in an industrial area. Wood smoke causes heart disease, lung cancer and cataracts. Soot or Black Carbon is the 2nd leading cause of Global Warming, and stopping it is the quickest way to slow climate change.
Point 5: That solar cooking tastes different from cooking over polluting smoke is a very weak argument against solar cookers. Hand out bottles of smoke flavoring, but you might be surprised that people don't want them. If women are made aware that their lives will be shortened if they cook using biomass burning, they will thank you a thousand times for a solar cooker. For perspective on the toll wood smoke particulates take in the United States through residential heating see http://woodsmokenuisance.spaces.live.com