Final answer:
Failure to wash hands contaminated with chemicals before eating a sandwich is an example of poor hygiene, which can lead to the ingestion of harmful substances and potential health issues.
Step-by-step explanation:
The failure to wash hands that are contaminated with chemicals before eating a sandwich is an example of poor hygiene. Poor hygiene practices, such as handling or preparing food with unwashed hands, can result in the contamination of food by microorganisms.
When infected individuals get stool or vomit on their hands and then fail to wash their hands before handling food, the food can become contaminated with virus particles or chemicals. This can lead to the ingestion of harmful substances and potential health issues.
It is crucial to practice good hygiene, including washing hands before eating or preparing food, to prevent the ingestion of contaminants and reduce the risk of foodborne diseases.