If it started after putting starter fluid into the the air cleaner (hopefully after the MAF sensor, otherwise you need to clean your MAF now), you have a fuel delivery problem. If it happens again, get someone with good hearing or a new hearing aid and listen for the fuel pump to prime. If the fuel pump is priming, then try turning the key on & off a couple times (waiting for the fuel pump to stop on each cycle) and then try to start it. If it starts right up, then you have a fuel pressure leak somewhere. Good luck...
'98 3.8L Convertible (Red w/ White top)