Nonsmoker

He's a nonsmoker.

Tom is a nonsmoker.

I'm a nonsmoker.

Tom is a nonsmoker, isn't he?

Mary is a nonsmoker, isn't she?

I know that Tom is a nonsmoker.

I know Tom is a nonsmoker.

He's a nonsmoker, isn't he?

She's a nonsmoker, isn't she?

I thought that Tom was a nonsmoker.