Yes. Recall those 57 chemicals they mixed together in Jordan? All were toxic....Let's PRAY our folks are on top of this!!!
I remember that. I remember a report that if the terrorists had actually been able to deploy that stuff it could've killed 80,000 innocent people.
Scientists use doxycycline to "turn off" cancer triggering gene
Hopefully those 57 chemicals are not in our steak sauce or ice cream flavors. It wouldn't be difficult to fill a hairspray or perfume bottle with extremely toxic chemicals or bioterrorism and pack it in luggage bound for the USA. How would a seemingly utilitartian bottle containing such a lethal mix be detected? It could easily be placed in carry-on luggage. I've ALWAYS carried hairspray on flights with no questions asked.
Here's a link that may help you in your searches for information (it's a library site):