If you smell something, say something? Gillette is fighting back against Isaiah Mustafa and the Old Spice frenzy with a campaign at the intersection of BBDO and B.O. But I wouldn’t hold my breath (or my nose) waiting for any awards. Ads running in New York City subways spoof post-9/11 terrorism alerts, urging that straphangers be mindful of body odor instead. Perhaps after nine years it’s time to take Tom Ridge’s color-coded attack warnings with a little humor. So, instead of the former Homeland Security chief’s “Elevated Yellow,” maybe it’s time to go with “Mello Yello” (reintroduced recently by Coke). Images via Gothamist, which has more, including a gas-mask execution.