It definitely happens, i still struggle with being out a bar surrounded by analog smokers. I haven't tried epipemods' epipe sauce line but it gets great reviews on being a muskier stronger tobacco flavor. I'd like to pick some up for just these sort of occasions. My current 'musky strong cigar/tobacco' flavor is DK Tobacco from a local shop here in Ohio called buckeye vapors. They operate mostly out of their storefront but the do have an ecommerce store, although it doesn't have their flavors online. They do ship tho and you just have to write the flavor you want in the comments. So far it works well for me. Give it a shot if you feel inclined.
Bottom line tho, you're healthier now than you were smoking only analogs so don't beat yourself up too much for the occasional slip up. Stay the course!