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This may seem like a silly topic to touch on, well you are far from right if you believe that.
On the article that follows below they have 3 smells that can get you killed if SHTF. One is obvious but you have to think about why people would still use and do things that smell even if SHTF.
I would like to add that just a simple act of lighting a cigarette could make your position known if someone was 100 feet or so away from you. You have to be very serious and knowledgeable about when and how to not produce smells like smoke from a campfire etc.
Read the comments in the article and if you can add your own please come back to our Facebook page facebook.com/shtfpreps and tell us more.