Solenodons have a modified salivary gland and a sort of channel for the venom, related fossils show full on hollow teeth similar a snake.

The slow loris mixes their sweat with their saliva(both saliva and sweat are toxic).

However in both cases I’m not sure about the molecular details of toxin production. E.g. whether the loris or solenodon just carry certain bacteria that make the toxin or whether they produce from their own cells.