Anyone who doubts how dangerously addictive tobacco is need only read the Jan. 1 front-page article titled "Smoking Ban Sparks Midair Revolt." It is amazing how the need for a nicotine fix can turn rational, thinking individuals into abusive, irrational beings who curse and shove flight attendants. In my opinion such a highly addictive drug should be classified as a controlled substance, to be obtained only by a medical doctor's prescription.

JOHN H. O'HARA Bowie

I had expected to be among the first of public enemies arrested for lighting up on an airplane, thanks to Congress' latest idiocy. But I am happy to know there are other smokers out there who are tired -- damn tired -- of being discriminated against.

Eleven passengers, after five hours, lit up. There must have been half that many other smokers too craven to join in. In addition, there were three unoccupied seats, making about 20 seats that should have formed a smoking section. TWA was completely out of line, therefore, in making the entire flight nonsmoking. (But it is accustomed to smokers' knuckling under to any abuse.)

A TWA spokesman says that "a lot of people" are "looking into" what to do if a nonsmoker glut occurs again. Suggestion: start filling the smoking section from the rear of the plane instead of scattering smokers in the last six rows.

Or face more revolts.

LAURA H. MYERS Woodbridge

Concerning the altercation between flight attendants and rebellious smokers who refused to obey federal regulations on a recent TWA flight: we, as lifelong nonsmokers, resent our group's being referred to as a "glut." We doubt that The Post would use such a word to describe a group of priests, women or black people. RICHARD H. HUNTER JR. ALLIE VEE HUNTER Springfield