I think I'm not going to be upfront that I don't have allergies.
Why do you want to lie about not having allergies?
I want to avoid troublesome situations and I don't want to cause problems for others
You shouldn't pretend to have allergies when you don't have them. That would cause more issues than actually being upfront.
Okay I'll stop with the lies.
I'm glad that you'll stop lying about your allergies! Lies are never the answer.