Someone is farting......

So...we have a farter at work. Unfortunately, he sits right across the wall from me. I'm not talking about normal, run-of-the-mill farts. These are serious, over-the-wall, smelled from two rows away farts. Today has been pretty steady at a pace of about one fart per 10-15 minutes. Is it mean to make obvious comments about the stench even though the farter knows he is the culprit and is probably embarassed?