I have asthma and have to avoid smoke. My family who knows this don t believe asthma is that serious and as long as they smoke outside I shouldn t complain. they smoked outside an open door Thanksgiving and I am still suffering. I wonder if I will ever recover. As soon as I realized there was smoke I left, but it was too late.
Thanks for your question on Chat Doctor. I can understand your concern. So basically you want to prevent second hand smoking. Best for this is to wear face mask all the time people around you are smoking. Take those smokers to rehabilitation center for smoking dead diction. Take your asthma Chat Doctor.  Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks