The obliging couples were trained with a device to measure their nasal airflow before sex, immediately after sexual climax and at regular time points thereafter. According to the team’s report, sex was as effective at clearing blocked noses, for an hour at least, as commercial decongestants, though Bulut concedes he did not get firm data from everyone. “I think some people couldn’t focus on the device,” he said. How sex might unblock the nose is not entirely clear, but Bulut sees a number of factors in play. “I think it’s a mixture of excitement, physical exercise, and hormonal changes that come with orgasm,” he said.
The tissue inside the sinus (sinii?) is erectile, not that that’s the right word. But blood supply to it increases with sexual excitement and it thus expands, as with willy and wimmins bits. Which acts as a decongestant.
Which is why, when caring for the ill a bed partner, there’s a task before the making a sammich bit.