https://www.koat.com/article/mountainair-substance-exposure-new-mexico/71388483

The local story lists other drugs as well.

State police say 25 people were exposed to fentanyl, methamphetamine, para-fluorofentanyl.

From the AP:

University of New Mexico Hospital Chief Medical Officer Steve McLaughlin said during a news conference in Albuquerque that authorities were working “under the assumption” that fentanyl was to blame. He said the responders’ symptoms ranged from mild to slightly more severe.

“It’s probably not absorbed through your skin, but it would be absorbed through your eyes, nose, mucous membranes, or if you inhale it,” McLaughlin told The Associated Press.