Toxic较复杂，除了真正的毒，还有The child appeared toxic on arrival at the hospital这种用法。这来自医疗用语：(medicine) Appearing grossly unwell; characterised by serious, potentially life-threatening compromise in the respiratory, circulatory or other body systems. （
https://en.wiktionary.org/wiki/toxic#English）
所以这里的toxic，除了poison、Infection，可不可以指人体内在病变引起的其它问题，要问医生们的共识了。