On my introduction, I was told to be careful of what you are eating or drinking too. Alcohol is a no no, as well as strong foods like garlic etc. Never tested this theory but I suppose it makes sense.
I wouldn't accept a colony stinging me as I worked alongside them either, and if you have such a colony on an allotment, expect complaints and demands you remove them soon. Be prepared to have a second site to move them to, or simply requeen.
Let us know how you go on
Your bees should be a pleasure to be around.