I can empathize with ms. cain, but disagree - odors do not worsen asthma in themselves - particulates do.   sensitivity to fragrance is not all that uncommon and marijuana, especially as it flowers, has a potent smell.  right at, and after sunset ,many flowers seem to release a lot of their own fragrance and pot is no different.  pot is very potent and I would guess if males were left to create pollen that would be bothersome to an asthmatic person too.  but it's the grower's place. it's theirs.
    I have terrible allergies and my neighbors have beautiful flowers right along the fence line, 15ft from a entryway to my home.  they were very nice when we chatted and we came up with a solution that minimized the problem.  neighbors BBQ's/smokers?  - bad allergy reaction. they blow off fireworks - the kids love it.  the horrid smoke drifts right into my house...not to mention the noise.  what can i do?  it's their place.  they make the payments, pay the taxes and live on their place.