Hops contain an oil called lupulin & pollen, which can mark fabrics and surfaces. Lupulin is a key ingredient in beer and the reason that hops have such a lovely aroma.
When hanging hops, always cover your furniture and floor with a dust sheet to protect them. Vacuum surfaces thoroughly and wash with soapy water and suitable detergent.
Your hands may feel sticky and we find mechanics grease remover very good for washing our hands and for shifting stubborn stains.