The officers were responding to a call of an overdose Friday. While trying to revive the victims in a minivan, they started to feel light headed.
Police said cocaine laced with the deadly substance fentanyl was discovered in the vehicle.
As part of a new proactive protocol, officers will soon be equipped with disposable masks, eyewear and gloves.
Water jugs will be placed in supervisors’ cars in the event officers exposed to the drug need to be washed down.
A biohazard storage unit for drug samples will be made available.
Chelsea Police Chief Brian Kyes said protecting his officers is priority No. 1.
“We have to give our officers personal protection equipment. They need to be safe,” he said.