You might be confusing the word incense with incest. These words are commonly misused.

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Pronunciation change

Noun
Verb

Noun change

Singular
incense

Plural
incenses

 
Burning incense at a temple
  1. An incense is an aromatic that releases a fragrant smoke when burned. It is used in the rites of various religions.

Verb change

Plain form
incense

Third-person singular
incenses

Past tense
incensed

Past participle
incensed

Present participle
incensing

  1. (transitive) If you incense someone, you make them very angry.
  2. (transitive) If you incense something, you perfume it with an incense.