No.  Herbs and spices are actually mildly poisonous.  The strong flavors are chemicals that plants make to repel insects and other predators.  People (especially those from hot climates) like them because they help disinfect rotten food.  People are big and can handle more poison than microbes. When my wife was pregnant her aging hippy friend gave her a bag of some herb that was supposed to help with pregnancy.  I looked it up, it causes miscarriages.  Guess how many miscarriages this woman had?  ELEVEN.  Her whole life was a tragedy because she believed in nonsense.