Fig. 1.

Word cloud of the comments given by the workers using the respirators when giving the comfort scores. The area taken by each word is proportional to the number of respondents giving that word as a comment. The words included in the word cloud are in alphabetical order: allergic, best, big, breaks, bulky, chin, clammy, comfortable, dislike, easy breathing, elastics, face, fogging, glasses, good, good fit, good visibility, hard breathing, hard communicating, hard talking, hard to put on, hearing protection, heavy, heavy breathing, helmet, hot, itching, leaking, light, moves, neck, nose, not good, ok, painful, poor elastic, poor fit, poor visibility, small, soft, stiff, tight seal, unaccustomed, and uncomfortable.