Infect

1. To taint with morbid matter or any pestilential or noxious substance or effluvium by which disease is produced; as, to infect a lancet; to infect an apartment.
2. To affect with infectious disease; to communicate infection to; as, infected with the plague.
3. To communicate to or affect with, as qualities or emotions, esp. bad qualities; to corrupt; to contaminate; to taint by the communication of anything noxious or pernicious.
4. (Law) To contaminate with illegality or to expose to penalty.