You can use a vaporous pen to test your fire alarm. A vaporous pen is a safe and effective tool for generating a controlled amount of smoke to activate and test fire alarms, including both photoelectric and ionization smoke detectors.

Here's how to use a vaporous pen for testing your fire alarm:

1. Safety First: Ensure the area is clear and well-ventilated to prevent any unintended consequences from the smoke.

2. Prepare the vaporous pen: Remove the cap from the end of the pen, insert a wick, and adjust it so that about 10mm protrudes from the pen.

3. Ignite the Wick: Light the exposed wick with a lighter or match, and then blow out the flame to start producing smoke.

4. Test the Alarm: Direct the smoke towards the fire alarm's sensor. The alarm should respond to the smoke by activating.

5. Extinguish the Wick: Once the test is complete, replace the cap to extinguish the wick, which can then be stored in the pen for later use.

6. Check the Alarm Response: Observe the fire alarm for its response to the smoke. It should trigger an alarm if it's functioning correctly.

7. Ventilate the Area: After testing, ensure the area is well-ventilated to clear any lingering smoke.

It's important to note that the smoke from a vaporous pen is non-toxic and cool burning, making it safe for use in most environments. Additionally, the smoke particles produced by the vaporous pen are similar in size to those found in fire smoke, which makes it an effective tool for testing air sampling systems and other smoke detection equipment. Using a vaporous pen is a standard practice in various industries, including fire safety and HVAC system testing.