Isolation suits have several usage scenarios, including:

1. Medical settings: Isolation suits are commonly used in medical settings to protect healthcare workers from infectious diseases. They are often worn when treating patients with highly contagious illnesses like Ebola or COVID-19.

2. Cleanrooms: Isolation suits are used in cleanrooms to prevent contaminants from entering the sterile environment. Cleanrooms are used in industries such as electronics manufacturing, pharmaceuticals, and biotechnology.

3. Hazardous materials handling: Isolation suits can provide protection for workers handling hazardous materials, such as toxic chemicals or radioactive materials. These suits are designed to protect the worker from exposure to harmful substances.

4. Biological research: Isolation suits are used in biological research facilities to protect researchers from exposure to dangerous pathogens or chemicals. These suits provide an extra layer of protection when working with dangerous materials.

5. Aerospace industry: Isolation suits are used in the aerospace industry to protect workers from exposure to hazardous substances during space exploration or rocket testing.

Overall, isolation suits are used in situations where workers need to be protected from hazardous materials or infectious diseases. They are an important tool for ensuring worker safety and preventing the spread of disease.