I either use some lavender essential oil mixed with boiled cooled off water and fill a clean glass spray bottle I use this up and make new as needed. There is also sold hydrosol which is the floral/herbal water left over from the making of essential oils, the fragrant vapour condenses into floral water. Places like
www.mountainroseherbs.com sell this in US .
On
www.aromaweb.com you can find recipes if want to make a blend of oils, and then to mix into nice ironing water.