Well, Bob .... I don't know how well a "liquid" would stay in, but a gel might work better. I think the "few extra holes" would only allow a liquid to dispense even faster, but
You might try it (at home) and see if the liquid scent stays in, or leaks out immediately. Might also depend on whether or not the plastics were real soft, or not ... as I'm thinking that a "not so soft" plastic bait would simply collapse & push the liquid right back out, due to the pressure.
Novel idea ... so let us know how it works out (or not) !!!
... cp