bitter, acrid, tasting bitter
acridly, pungently, caustically, sharply
sarcastically, caustically, bitingly, sharply, acidly
Едкий дым щипал глаза и горло.
The acrid smoke made his eyes and throat sting.
Дым, окуривавший комнату, был очень едким.
The smoke that had filled the room was very acrid.