laudable pus

lau·da·ble pus

an obsolete term used when suppuration was considered unlikely to lead to pyemia (blood poisoning), but more likely to remain localized.
References in periodicals archive ?
Infection was so normal that some doctors believed "laudable pus" helped remove "ill humours".
It is not a gruesome narrative, although there are a few sections--embalming; chronic diarrhea, "it takes good guts to be a good soldier" prison camps; and "laudable pus"--that may bother some readers.