How to use "knob" in a sentence

Her skin almost stuck to the knob

The knob turned, but the door wouldn't open

As she reached for the knob, she smelled the gas in the garage.

She snatched her hand off the knob as if she had almost picked up a tarantula.

After the bellman left, Elliot engaged the deadbolt, hooked the security chain in place, and firmly wedged the heavy straight-backed desk chair under the knob.