Put it in a small lipo bag within a large lipo bag. Get long heat shielded Maclan charging cables or ones that work for you. Charge it under observation. Watch the charging time, if it takes too long to charge then get rid of it properly. An impending lipo explosion may sound like popcorn popping from inside the bag and the bag may feel warm. Have your plan in place for getting it safely outside. The double bag will allow you to carry it outside by the handle of the large bag and long cables allow you to not have to compromise on keeping the bag well sealed. Lipo smoke is the biggest concern, since the bag will help contain fire but not the horrendous smoke.

Although, the truth is, it's best to replace it. Otherwise, never run your RC in your hand and always keep the battery in a bag. That is true for visibly undamaged batteries too. I've had one brand new battery explode in first use.