can you keep your fabrics/stuff in a room that the smoker is not allowed to smoke in? that would help-
and washing/sealing up would be ok- it is long term storage that is not recommended in plastic because of the risk of moisture getting in/mildew happening.
if you take your plastic bags outside-and air them-let the stuff out on occassion- and becareful during really humid times you should be ok.
another option would be to take to laundramat right before going to where ever you are planning to sell---then everything is fresh and clean for the sale.
depends i guess on how you are trying to sell- whether its like booths set up at festivals/markets- or if you are trying to direct sell online- if that's the case- wash each item and package it to go when it is sold-
where there's a will there's always a way :)