Cyclically we go from cold to hot and vice versa. The Earth oscillates around the Sun in an elliptical orbit, and if we add the tilt of the Earth with respect to its axis, this translates into the seasons of a terrestrial year, depending on the hemisphere, of course.
We know very well how perfumes are today. We know them as liquids and solids, the liquid state being the most widespread. Diluted in alcohol, in vegetable oils, in fat or even in water. How they were used in ancient Egypt is far from the way we use them today.