Sure, we can quantify that. First, treat each perfume compound like a gas or a volatile liquid in air. Measure its concentration in the bouquet with a gas chromatograph or an olfactory sensor—call that C₀. Then monitor how fast the concentration decays at a given distance or time; that’s the diffusion rate. Using Fick’s first law, D = J / (∂C/∂x), you can solve for the diffusion coefficient D once you have the flux J and the concentration gradient ∂C/∂x. If you only want a simple “scent spread factor,” set up a small controlled chamber: place the bouquet in the center, record the scent intensity at several radial distances with a consistent airflow, fit the data to an exponential decay, and extract an effective coefficient. In practice, a quick proxy is to use a thermal desorption tube or a portable sensor: record the time it takes for the scent to peak at a given point. That time inversely correlates with diffusion speed. Keep the temperature, humidity, and airflow constant, and you’ll get a reproducible “scent coefficient.” Remember, each compound will have its own D, so the overall bouquet is a weighted sum. That’s the systematic way to put numbers on fragrance mingle.

Yeah, put a sensor on a tripod in the greenhouse, record the scent peaks, and you’ll get a time‑to‑peak for each flower. Just make sure the airflow, temp, and humidity stay constant—any fluctuation will skew your “diffusion curves.” Log the data, fit it to an exponential decay, and you’ll have a numerical spread rate for each bouquet. It’s basically turning your garden into a data set; just don’t forget to label your variables.