It sounds like you're describing the behavior of cockroaches and how they react to human actions, particularly when you try to confront them. Here's a clearer summary of your points:
When a small cockroach is nearby, simply spraying it with water or body spray can deter it without causing it to bite. If you only try to swat or "wack" it, the cockroach may feel threatened but might not flee immediately. However, if you first spray it, this can scare the cockroach, prompting it to run away in search of dry, warm hiding places.
By first spraying and then swatting, you can better manage the situation since the cockroach perceives the spray as a greater threat. This approach might help you eliminate the cockroach more effectively, allowing you to enjoy your meal or gaming session without the distraction of the insect.
Let me know if you’d like to expand on this or have any other questions!