Here's a link with a few ideas to try!

http://buydontbuy.net/2019/02/12/how-to-remove-plastic-taste-from-keurig/

HI Ginny,

I clean our coffee maker with vinegar which will remove odors and bacteria. Here's a tutorial that will give you exact directions for cleaning your Keurig. Wishing you the best.

https://www.hunker.com/12420831/how-to-remove-a-plastic-taste-from-a-keurig

Hi Ginny, perhaps this will help. http://buydontbuy.net/2019/02/12/how-to-remove-plastic-taste-from-keurig/

Use vinegar to clean the equipment well and add a good amount of vinegar to the water reserve and run a few cups of "faux" coffee through the cycle. Then do again with clear water.

Ginny....I would run vinegar through it about 3 times then plain tap water 3 times. Usually gets any odd tastes out

the key to running vinegar through your coffee maker is to turn it off and let it sit for 30 minutes once you run it through the machine then follow with water to clean it out you may have to do this a few times but be sure to turn it off and let it sit.

Cleaning is important. I remove the old filter before cleaning and put in a new filter when I'm done.

https://www.hometalk.com/35697212/spring-cleaning-my-keurig-coffee-pot

Spring Cleaning My Keurig Coffee Pot

Hi Ginny, I have a keurig and I clean it faithfully every three months, only 2 of us in the house. I have attached link on how to clean the plastic taste out of your keurig and how to clean it. Hope it helps you.

https://www.hunker.com/12420831/how-to-remove-a-plastic-taste-from-a-keurig