Complex sentence: Smoking in public was, for a long time, reserved for men, and when done by women was sometimes associated with promiscuity; in Japan, during the Edo period, prostitutes and their clients often approached one another under the guise of offering a smoke.
Split into simpler sentences: Smoking in public was for a long time something reserved for men, and when done by women was sometimes associated with promiscuity. In Japan, during the Edo period, prostitutes and their clients often approached one another under the guise of offering a smoke.