The obvious answer would be yes, if you squash them they probably do.
However, that is not what I meant.
They are so close to the ground and all sorts of aromas may abound.
Do snails have a sense of smell?
Source: Creative Commons Wikipedia
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Ceenoa 
“Cause they can, or how else do they KNOW where the tender new shoots of my plants are waiting for them?
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Oh, skybright1 beat me to answering this question. They must have some sense of smell to sniff out the right kinds of leaves and shoots.
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Maybe its all in their feet – well, foot. Maybe they can sense the new shoots growing with thier slippery, silve ooze making foot. I mean, where would they keep their nose? Their eyes are on their antennae, which doesn’t leave much room for noses!
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My first reaction was yes they are stinky slimy horrible things… but then actually read what you had typed in 🙂 Very interesting, as Skybright has pointed out they must have to know. Luckily here on the coast we do not have so many, mostly caterpillars eating up everything beautiful!!
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Oh caterpillars, don’t get me started on those! We had a version on our gum tress, that sting like a million jackjumper bites when you accidentally brushed past them. They also would kill the gum tree. Luckily they seem to have been missing for the last few years.
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