I mean they are necessary for some people..
Not sure about eating them
I don't exactly know how to put this in scientific terms, but it is a wet cough which when completed, has brought up phlegm enough to fill a handkerchief. It is the last stage of a common cold before it goes away.
1 call police
2 send PARTNER to find regurgitating device
3 clear throat and tilt head back
4 give 30 compressions
5 2 breaths
6 repeat steps 3 and 4 till either police get there or partner finds device.
7 do not stop unless you physically cannot continue