I have a doubt in this question:
Which is the odd one?
A) spill
B) soap
C) hand sanitizer
D) mouthwash
I guess it's all related to hygiene so is it "spill" because it's a verb, but I discovered it can also be a noun and mean like a drop that was spilled, as in "a spill of coffee".
In terms of liquids, only soap can be excluded.