We were leaving a Soft Play place and 2 women were standing outside the entrance, smoking. DD2 pointed at them and proclaimed "Yuk! Cigarettes!" in her most booming voice. I found it funny and walked off without looking at the smokers or saying anything to them. I wondered for a bit if I should've apologised, though...
(DD2 is 3. This happened a few weeks ago but I was reminded of it by another thread.)