He realized an odd, faint smell was in the air.

An odd smell emanates from the kitchen when I enter the house.

That was where the odd smell came from, no doubt.

Yes, and there's a rather odd smell in this room.

The air had an odd smell when I took off my helmet.

There was an odd smell on the wind, like burning fennel.

Even the faint breeze, with its odd smell, had died away to nothing.

His feet added another odd smell to the room.

Perhaps there's even an odd smell, or a growling sound coming from under the hood.

And, she thought, there was an odd smell about him: something sweet, pervasive, sharp.