Hi mcl,

I have had a similar experience a few times, and the smoke smell was caused by the client before me.

I had given my T some Lysol, because I am a germaphobe and he was using only Febreeze on the couch (ick, no), so I sprayed that all over the place, which solved the issue.

I think you should bring whatever works for you to help clear the air and won't set your asthma off.