Can't get it started

Starting fluid can dry up cylinders in a hurry, to the point of affecting the ring-seal and thus, compression. It is afterall a solvent. Now there may not be a gallon of it in every can, but you get the idea. If the engine doesn't fire up right away, the compression cycle will force some of it past the rings,into the crankcase, taking the oil from the rings with it. After several cycles it is possible to have enough combustible mixture in there to fuel quite an explosion.Not to mention the possibility of explosions in the exhaust systems. I have witnessed a few of those.
I can give this tidbit; do not be leaning over with your face above the carb when you spray that stuff. It takes several weeks for your nose hairs to grow back, and it can be very itchy until they get long enough! I couldn't get out of the way fast enough and I was young and fit at the time.
I don't use that stuff anymore.