There's no denying to the many bacon lovers that bacon is delicious. But it's not very good for you -- in fact, it's one of the worst things you can eat. One average serving of bacon -- three slices -- contains 435 milligrams of sodium -- about one-fifth of the average adult's daily allowance [source: Magee].
A fever that develops from allergies is not caused by the allergic reaction, according to MayoClinic.com, but it is most likely a secondary infection caused by the allergic reaction. For example, someone who suffers from nasal allergies can develop chronic sinusitis, according to MedlinePlus.com.
You can have an allergic reaction to a drug even if it caused no reaction in the past. The most common signs of a drug allergy are hives, rash, facial swelling or fever. If you have an allergic reaction to a drug, it causes the release of histamine and other chemicals that cause allergic symptoms. Your immune system then becomes keyed to react the same way if you take the drug again in the future.