Wives can be tricky that way. You will find some smoked delicacy that she is particularly fond of, and if you make sure that you have some of that scheduled for the smoker, she will be a little more understanding.
My wife calls herself a workshop widow when I get going on new projects (especially welding up the next great smoker!). I am quick to point out that she knows exactly where I am. She has since come around to embrace my hobby, and has even started buying me BBQ related gifts and doing all the legwork when I have big events...Gotta love that!