In that case, it would be vaporized rather than smoked, carcinogens increase inflammation. An ingredient in marijuana, CBD, that's responsible for the stimulating effects of certain strains, is very anti-inflammatory. Anti-inflammatory things are very spicy, an example of an anti-inflammatory food are hot peppers. When a strain of marijuana has a spicy taste, that's a good indicator of high CBD. Bronchitis is caused by bacteria, I'm not sure which chemical is responsible for it, but marijuana is anti-biotic. I think it's CBD though. So basically, you're reducing the inflammation and battling the bacteria. Treatments for bronchitis are usually taken orally, which I don't consider as efficient (Correct me if I'm wrong). I was just sitting and thinking endlessly about random shit and came upon this idea, if my theory is false, don't flame or any shit like that.