Hazardous chemical detection in a microwave oven

A method comprising:

• receiving, by a microcontroller of a microwave oven, a reading from each of at least three chemiresistors inset in an interior side wall of the microwave oven, wherein each of the at least three chemiresistors is configured to detect one chemical;
• determining, by the microcontroller, whether a pre-set threshold is met by a majority of the at least three chemiresistors;
• and
• responsive to determining the pre-set threshold is met by the majority of the at least three chemiresistors, sending, by the microcontroller, an alert.

A computer system comprising:

• one or more computer processors;
• one or more computer-readable storage media;
• program instructions stored on the computer-readable storage media for execution by at least one of the one or more processors, the program instructions comprising:
• program instructions to receive a reading from each of at least three chemiresistors inset in an interior side wall of the microwave oven, wherein each of the at least three chemiresistors is configured to detect one chemical;
• program instructions to determine whether a pre-set threshold is met by a majority of the at least three chemiresistors;
• and
• responsive to determining the pre-set threshold is met by the majority of the at least three chemiresistors, program instructions to send an alert.