In January of this year we found on Craigslist a 2001 Casita
17' Spirit Deluxe. Trailer had been used but kept in excellent condition except at least one of the users was a heavy smoker. The carpeted walls had absorbed a lot of odor. I've had some experience removing smoking odor from RVs, & the price was right so we brought it home. I ordered one of the small 'bare bones' ozone generators (3600mg per hour) to 'shock' the odor for removal & it has worked pretty well. I cleaned all hard, smooth surfaces with chlorine bleach solution, then used the same solution sprayed on the carpeted walls, let it dry & vacuumed, the walls thoroughly. The 'bare bones' ozone generator
recommends a 20" box fan to move the air, provide more 'shock' & to cool the transformer. I have a small 8" 12VDC 'truckers' fan which has provided pretty good air circulation. I've used the ozone generator
probably 4-5 times for around an hour each time, & let it air out thoroughly afterwards. It has removed the old smoke odor, leaving a slight, lingering ozone 'fresh' smell in the camper but the old smoke odor returns after a few days. It is a very slight odor but noticeable when first entering the camper. I've also tried spraying with lemon scent Pine Sol, Fabreeze, & Lysol Neutra Air odor neutralizer. All seem to help on a temporary basis but eventually the odor returns, even tho considerably reduced. I had the same problem with a pop-up truck camper & eventually got rid of the odor by spraying the canvas walls & screen with the lemon scent Pine Sol. I didn't have the ozone generator
at that time.
I'm thinking I may have to spray the carpeted walls (& floor) to the point of thoroughly dampening the fabric & then use my wet-or-dry shop vacuum to remove all the odor causing bacteria, then use a 20" box fan with the ozone generator to really move the air & 'shock' the odor containing fabric in the trailer. The odor has been reduced probably 90% & is tolerable but I'd like to get rid of it permanently.
Has anyone here had experience removing old smoking odor from a Casita
or other fabric walled trailer, without having to remove the carpet from the walls?