self-contamination

noun
self-con·​tam·​i·​na·​tion | \ˌself-kən-ˌta-mə-ˈnā-shən \

Definition of self-contamination 

1 : contamination by oneself

2 : contamination from within

First Known Use of self-contamination

1955, in the meaning defined at sense 1

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The first known use of self-contamination was in 1955

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