I have asthma. Playa dust won't trigger it most of the time. However, floral scents often will; I avoid perfumes and scented air sprays and fresheners like the plague. Personally, I do NOT want a scented porto. Please. I'd rather deal with a whiffy potty than wheeze and have to go to medical.
I'm too jaded to think up a good sig-line. Need more coffee.