decontaminate
verb (used with object)
to make (an object or area) safe for unprotected personnel by removing, neutralizing, or destroying any harmful substance, as radioactive material or poisonous gas.
Used to describe an ongoing action or continuous state that was happening at a specific time in the past.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
A cleanup crew was decontaminating the Dallas apartment where Duncan had been staying before he was admitted to the hospital five days ago.
From Reuters ● Oct. 4, 2014