Besides the smoking, with Mr. Draper's habitual womanizing he should have dry cleaned his suits to remove perfume odors and perhaps Betty wouldn't be leaving him. Jeeves does not condone Mr. Draper's actions, but has been trained to "look the other way" with such matters.
Rena Lange and Dye Stain Removal at Jeeves
Stain removal requires extensive knowledge of chemistry, garment construction, and fabric types. By simply placing a garment into a dry cleaning machine does not yield a stain free result.