Winter lasts by us about 6 months. It means that we have 4 total different seasons in a year. During spring people are awaking from their long winter sleep, they finally open their eyes, raise their heads and begin to wonder what´s that round and bright thing on a sky.
Some people have been working through the winter (as test people normally do) without any hope of summer and warm. In some moments outside they still can sniff the fresh air which contains something familar, without describing it precisely, what are they sensing. It´s a smell of nature living under snow and waiting to be released.