Does that mean that you have to keep adding antifreeze/coolant?
If that is the case, then it would appear that you are losing coolant, and that could be as a result of a leak from a hose or a loose hose clamp, or it could be the result of a leak in the heater core. I can tell you from personal experience that leaking heater cores are a known issue with Tauruses from that era, and I can also tell you from personal experience that breathing aerosolized coolant can result in some very serious respiratory issues.
IMHO, the first step would be to check for evidence of coolant leaks under the hood, and also to have a pressure test done on the cooling system. If it turns out that the heater core is leaking, I would suggest that you have it replaced a.s.a.p., in order to preserve your health and the health of your passengers. Just be prepared for a VERY large repair bill, as this is one of those repair situations where the part costsāmaybeā$80, but the labor will run into many hundreds of bucks.