A friend told me about an off-the-record list of celebrities with unpleasant body odor, where Brad Pitt supposedly featured as #3. Some Googling later, I found out Brad has moved up to #1! Here is the list as compiled in May 2004 by Mikael Jagerbrand:

#1. Brad Pitt
#2. Russell Crowe
#3. Hayden Christensen
#4. David Bowie
#5. Courtney Cox
#6. Robin Williams
#7. Christina Aguillera
#8. Cameron Diaz
#9. Metallica
#10. Bob Dylan
from: ncbuy.com

I remember a Friends episode “The one with the rumour” where Brad Pitt did a guest appearance. Brad and Courtney on the same set, what an olfactory delight.