The record for the loudest purr is 67.8db(A)
The record for the loudest purr by a domestic cat is currently held by Merlin, a black and white cat from Torquay, UK. His purr is 67.8db(A) and for context, this is nearly the same volume as a shower! Most cats purr at around 25db.
Hyraceum, a perfume ingredient derived from the faeces of a small rodent, is still used by niche perfume houses