Grammar/spelling hive mind help please!

[Pleasedontdothat]

Which is more acceptable? Smoke-free or smoke free?

I would tend towards smoke-free but not sure of that's correct

Smoke-free

Why do you need it? If it's a
please keep this area smoke free
could you just rephrase it to
Please keep this area free of smoke?

However I would lean to no hyphen.

I would hyphen for an adjective, i.e. smoke-free facilities

but not otherwise: please keep this area smoke free.

Hyphen if it's used as an adjective.

Hyphen looks better to me.
'This is a smoke-free site'
Adjectival noun?

Hyphen if used as an adjective.

Hyphen, yes.

I agree with the adjective - isn't this now a compound adjective?

Thanks - hyphen is what I thought but my organisation usually follows the Guardian style guide which is very anti-hyphen. I’m proofreading a leaflet and there are multiple different versions on the same page - smoke free, smoke-free and even smokefree

As above, depends if it's an adjective or not so we need the full sentences.

onsen has it. Depends whether or not it is being used as an adjective.

Thanks - the phrase is ‘with the right support, you can be smoke free/smoke-free’