Ive had it.
If you have it you will know.
Sulpherous burping and vomiting, sewage smelling running explosive poo , serious stomach cramps.
I had it for 4 weeks between abel tasman on south island and cambridge in north island.
I dropped nearly 2 stone – combo of not eating and pooin what little i did eat out almost immediately. And cycling 100km a day – felt seriously weak.
Visited 3 doctors on the way north all said it was just a passing bug
Went to a private quacks and got doxycycline and it cleared up with 3 days and hasnt been seen again. Although i was told you may never get rid of it it just lies dormant – certainly hasnt come back on me yet .