“General question?”

I was going out to the store I took with me one bag of trash, it was wet and dirty. I throw it away and continued to the store, first when I entered I took hand hygiene which was on the door, and while being in the store I touched one box of food, and it fell from my hand through other food and touched the food directly. When I went out I thought that this might be a reason that someone got sick because of me and I felt guilty and that someone could die because of this if his immune system is weak. What do you think about this story and am I giving it too much?