A popular additive to many perfumes, Ambergris, comes from the intestines of sperm whales. When it’s fresh, not surprisingly, it smells like crap, but then later begins to smell sweet and ‘earthy’. – WTF Fun Facts
Source: https://www.businessinsider.com/whale-poop-perfume-ambergris-why-its-expensive-2019-1
Sooooo. Someone thought: Hey let us keep this weird piece of crap that smells Horrible and wait some time. Then they added it to stuff that should smell nice…