Believe it or not, all doctors don't know everything there is to be known about every disease. People with asthma react to different things. Some people get very bad attacks from certain animals, some don't. Some people react badly to mold, others don't.
I react to cigarette and cigar smoke. I don't make demands that no one smoke around me. I just don't hang out with people who smoke. I don't make demands that laws be changed; I just don't go where people smoke.
I used to smoke, and I used to not have asthma.
If every doctor knew everything, what a wonderful world that would be.
Best wishes for your continued (and better) health. Any chronic medical condition is not pleasant.