The love of my life and my fiercest protector is a pom. Pomeranians do have various breathing problems. One thing they do is the "reverse snort". They make this horrible snorting noise on the inhale. This usually happens when she is overly excited, eating or drinking too fast, overexerting herself, gets overheated or breathing in really cold air.
She also has asthma which terrifies me everytime she has an attack. Pomeranians' tracheas are very sensitive and can damage easily. Hayley (my pom) snores so loud she can wake me up at night.
Whenever she has an attack - asthma or reverse snorting - I gently rub her throat while talking to her in a soothing, calming voice. It always works; but, it always scare me too.
A pom should never wear a collar because of the delicate natures of their esophogus, trachea and other neck structures - always a halter.