I am pretty sure your best bet to get something that is roses scented but is non-toxic would be creating a tincture vegetable glycerin with roses. Take dried rose pedals and let them sit in the sun for 4-6 weeks immersed in vegetable glycerin which should impart roses smells and other rose components into the vegetable glycerin. I haven’t done it myself but it is suppose to do some extractions of the compounds.
You will be extracting the essential oils and all other compounds from the rose pedals into the glycerin but in lower concentrations than a pure essential oil. (Also depending on the essential oil will have a broader range of compounds depending on how they made it)
Exactly. Don’t use any roses that are treated. I like Mountain Rose Herbs