scent
![A facilitator holds a bottle while a learner wafts a scent to her nose](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/ExSci_Chem_20180530_1735.jpg?h=265e640d&itok=moVmabyK)
Exploring Size - Scented Solutions
In this activity, learners sniff a series of diluted scent solutions to discover they can smell nano-sized particles they can't see.
Product
![A facilitator adds scented oils into deflated balloons](https://nisenet.org/sites/default/files/styles/curated_list_large_cropped/public/2022-02/20120216GH_0371.jpg?h=4362216e&itok=v3heMijA)
Exploring Size - Smelly Balloons
In this activity learners use their sense of smell to explore the world on the nanoscale and learn that we can smell some things that are too small to see.
Product