Answer:
The correct answer is: pine trees
Step-by-step explanation:
The yellow dust that normally covers up cars, streets, and homes does not cause any allergies and it cames from pine trees.
These trees are very ancient and have lived on earth from a long long time ago and their process of fertilization is what gives us this yellow dust that covers our streets, pollen is just the pine seed fertilized. It's the normal reproductive process of these trees!
Pollen is also very common as a cooking ingredient, some people even take it in vitamin pills.
Pine pollen abounds only at a certain time of the year, so enjoy this phenomenon if you have the chance to witness it!