Tell me where it is being said & by whom?
The fragrance of the flower is never borne against the breeze;but the fragrance of human virtues diffuses itself everywhere.
To me, this seems to be from some creative mind, who wanted to let the fragrance of his/her own thoughts diffuse over the internet if not air. My analysis is based on Google search for this quote, partially & fully.
To gauge the authenticity of a quote, we need to check the source of that quote. If we see such quote in Facebook, Whatsapp, Twitter, other social media-s, then the genuineness of the quote will be equivalent to that site, which is least. In social media anyone can upload anything without backup -- whether true or false.
You may find your quote as an image in this link.
For example, the same link also contains following image. As expected, it's not present in Gita either (see the spelling of "Bhagavad"). There are few other quotes from Ramayana as well in that link, which also can be non-existent.
As already discussed in following post, there are many homemade quotes flowing in social media on the names of Gita, Ramayana, Mahabharata, Veda, Purana etc. They ought of be ignored.
Which verse of the Bhagavad Gita says "If you don't fight for what you want, don't cry for what you lost?"