No idea if there is a connection between the two, but almost seems likely since our cat vomits rarely. First few times were mucus and now a large amount of food. Fed her around 8:30 this morning, hardly anything since. We've had the furnace company here several times over the past few days (here again now) so hopefully the problem will be resolved. We've kept the cat upstairs during the evening last night. Could the fumes be the problem and should I call the vet or just see how things go?