'But it smells!'

My son, who is 2, turning 3 in September went with me to one of his parent nights at his crèche.  While we were sitting and waiting for the Principal to start talking he said (luckily not to load) that he farted.  I softly replied and told him that it is not polite to speak like that in public and he then answered me with, but it smells.

I could see the lady in front of me shaking with laughter.  She turned around and said that I do not have to worry, she has two daughters and they embarrass her all the time.

Thanks

Madeleine