So my younger sister (10 yrs) recently started having a very foul body odour that came out from her lower region and also armpit. Then suddenly my second sister started having same foul odour (she is 19 yrs. After a couple of months I started battling h pylori and this was last year and I still have it as i've tried different antibiotics and it didn't work later on I was diagnosed with hiatus hernia but my main issue now is I have recently also contacted this body odour from my sister. We share same bed and most times she sweats. My problem is I hate this smell as it's bad and irritating and it has made me hate egg because it smells like egg. I smell it in my armpit, my poop and urine. This smell drives be crazy please and I don't want it to get embarrassing.