Sentence:  Nowadays, she'd be the kind of woman who'd carry one of those breath-<WSD>freshening</WSD> atomizers in her purse—gassing herself with the atomizer, all day long, just in case someone might be moved to spontaneously kiss her. 
Meaning of the word marked with <WSD> tags:  To remove or cover unpleasant qualities such as staleness, bad odour or taste (in air, breath, water, etc.).