The new guy im seeing has the same body odor as my ex?

so I realized that the new guy im seeing has the exact same body odor as my ex and I dont know if that is just how dirty white boys smell. but its a very distinctive scent! and my ex has the same scent!! I actually dont like it. my ex would get it when he wouldnt shower or was out working all day. and this guy seems to have it all the time and its kinda a turn off! i want to know how it is possible for 2 different people to have the same scent?