Oggy and the Cockroaches (1999)

S1E53 Memory Lane

Oggy stumbles upon a stash of old love letters from a girl he once attended school with. Meanwhile, the cockroaches hatch an especially devious scheme, staging a fake date and swapping out Oggy's deodorant for a foul-smelling insect repellent. The result is a hilarious disaster that leaves Oggy in quite the predicament.