Step one: Gather the best smelling and most freshest flowers that you have available and offer them to the Lord. You can offer the flowers to the Lord in His picture form, deity form or even in the mind.
Step two: The next day place the offered flowers on a nice plate and put them in any room in the house and smell the wonderful aroma that permeates the air throughout the day. Enjoy! Hare Kṛṣṇa!
"When the fragrance of the garlands of the Lord enters the nostrils, immediately the bondage created by piles of sin is destroyed." [Bhakti Rasamrta Sindhu 1.2.163]
"It is said that the nose smelling flowers and gandha offered to the infinite Lord is the cause of complete purification in this world." [Bhakti Rasamrta Sindhu 1.2.164]