Here's why:

* Safety: Wafting chemicals creates an unnecessary risk of inhaling harmful fumes.

* Accuracy: Wafting doesn't provide a reliable way to determine the smell or properties of a chemical.

* Alternatives: There are safer and more accurate methods for assessing chemicals, such as using a fume hood or a chemical fume detector.

Instead of wafting, here's what you should do:

1. Work in a well-ventilated area: Use a fume hood or work outdoors if possible.

2. Use appropriate personal protective equipment: Wear gloves, a lab coat, and safety goggles.

3. Use a chemical fume detector: This is the safest and most accurate way to assess the presence of hazardous fumes.

4. Read the Material Safety Data Sheet (MSDS) carefully: The MSDS provides detailed information on the hazards of the chemical and how to handle it safely.

Remember: Always prioritize safety when working with chemicals. Never attempt to waft a chemical without proper training and safety precautions.