[wrp]

In About Face: The Odyssey of an American Warrior (1989), David Hackworth mentions about being on patrol in the Korean war:

None of us used repellent (Chinks could smell it as easily as after-shave, soap, tobacco, and toothpaste); we couldn’t slap at them (noises traveled loud and far at night). So we waited and reluctantly contributed our blood.

and about poor discipline in Vietnam:

Guys were using soap, toothpaste, and shaving cream before operations. They were smoking and wearing mosquito repellent on patrol.