I can’t get the full text, but https://www.microbiologyresearch.org/content/journal/acmi/10.1099/acmi.fis2019.po0192 has the abstract. It looks like I misremembered its findings (or remembered an article that oversimplified them), though - having the lid down does something to the released particles to make more of them stay airborne for much longer, but it does reduce the number that escape, like you’d expect.