Vodka - interesting. Personally I wouldn't waste it lol!
I guess it depends what it is that's making it smell. It may not be as obvious when it's dry - a bit like a wet dog or wet wool!
Someone here suggested a final rinse with vinegar to cut grease and odour. Someone else has used lemon.
You could try Febreeze spray or putting it is a plastic bag or sealing it in a plastic container with charcoal or bi-carb to absorb the odour over a couple of days, but it will need to be 100% dry first or it will go mouldy.
I'm feeling better this morning....must have just been something about being a bit damp still. It's back to having a faint stored in the garage smell. I think that will dissipate and if it sticks around an afternoon outside in the fresh air and sunshine. I will still probably spray the interior with vodka.
Vodka or grain alcohols make great fresheners and they dry quickly. I've used it on old wool coats with great success. You just need to put them in a good spray little with a mist spray.