Related by context. Frequent words. (Click for all words.) 66 residues 57 Residue 56 sticky residue 56 stains 55 traces 55 powder residue 53 oily residue 51 stain 51 chemical residues 51 impurities 51 odor 51 aftertaste 50 overspray 50 carpet fibers 49 byproducts 49 gunpowder residue 49 uncontaminated 48 residual 48 fishy smell 48 trace amounts 47 gunshot residue 47 latent prints 47 cleaning solvents 47 contaminants 47 flammable substances 47 oxalic acid 47 colorless liquid 46 vapors 46 blood stains 46 solvents 46 Acetone 46 sifter 46 oily substance 46 latent fingerprints 46 smudges 46 spatters 46 overpowering smell 46 potassium hydroxide 46 scrapings 46 spatter 45 smell 45 smudge 45 isopropyl alcohol 45 powder 45 harmful contaminants 45 contamination 45 carbonized 45 granules 45 grease 45 thinners 44 moth balls 44 unburned 44 oxidization 44 bloodstains 44 solids 44 flecks 44 husks 44 discoloration 44 chemical vapors 44 rinsing 44 particulates 44 pungent odor 43 vapor 43 poisonous chemicals 43 staining 43 contaminates 43 toxic byproducts 43 chemicals 43 salt crystals 43 fingerprints 43 casings 43 smelling 43 brownish 43 varnish 43 crop residue 43 noxious chemicals 43 DMSO 43 particle size 43 substance 42 detectable 42 fumes 42 ammonium sulfate 42 flammable 42 stippling 42 contaminate 42 discolor 42 organic solvents 42 bloodstain 42 odors 42 lint 42 bleach 42 microbial contamination 42 rosin 42 stained 42 contaminant 41 contaminated 41 granule 41 discolorations 41 pungent smell 41 dust 41 speckles