Olfactory fatigue, also known as odor fatigue, olfactory adaptation, and noseblindness, is the temporary, normal inability to distinguish a particular odor after a prolonged exposure to that airborne compound.
Around here (Aus) it has been a tradition for generations to leave a beer out for Santa as he no doubt could do with a break during the long night dropping off presents.
Telephones existed for a century before wikkipedia...
In the before times: The guinness book of records started as a promo by the guinness brewery given to pub owners to settle bar argumnets like this one.