Underarm tactics: Meet the scientist on a mission to end body odour

Dr Christopher Callewaert is on a mission to develop a probiotic deodorant, a revolutionary product that promises to banish smelly armpits. Are we taking the microbiome theory a step too far, asks Donal O’Keeffe

‘Doctor Armpit’ is a nickname most might not fancy, but Dr Christopher Callewaert relishes it, even if it does call to mind a child’s idea for a supervillain. It’s Callewaert’s Twitter handle, his email address, and the name on his website.