I do put my lunch at work on paper 2 plates, then take the lower one and cover the plate hence covering the food, put it into fridge and go to gym. lunch after

I do put my lunch at work on paper 2 plates, then take the lower one and cover the plate hence covering the food, put it into fridge and go to gym. lunch after gym. When I come from gym, there is not much food left anymore in our cold buffet, by far the healthiest food I can get there). after reading this, not so sure I want to touch those paper plates anymore, although there is no alternative at work...