Ah, yeah, Venom is just a suit in the same way that a TARDIS is just a box, heh.
IIRC, isn't it that you don't actually wear a symobiote as much as it kinda completely absorbs you? Sort of like ... After a caterpillar goes inside a cocoon, it ... Dissolves. Into caterpillar goop. And then the goop reforms into a butterfly.
In the limited series from the 90s, Venom: Carnage Unleashed, Venom is thrown in to a train by carnage and merges in to a stripe on the train to hide and escape.