How to say in Czech: Do they smell something burning?

English
Do smell something burning?
Czech
Necítí, jako by něco hořelo?
They smell something burning.
They are used to the smell.
They can smell flowers.
They can smell it.
They have a very good sense of smell.
They lost their sense of smell.
They smell bad.
They still remember the smell of her hair.
What does it smell like?
I smell gas.

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