Smoking in a B&M

I definitely have a phobia of smoking in B&Ms. I'm not sure if its because I usually get looks like "Betcha he picks up a vanilla flavored turd" or if its because I'm just generally a shy person...but I want to get over this fear...but i'm not sure how. I'm going home for the weekend to work, but I have all of Saturday off and I want to smoke in a warm place...but that leaves only B&Ms. I was thinking of bringing a book and just reading, keep to myself and if someone talks to me then talk to them. I hope this'll get me to feel more comfortable!