Here's what rhymes with smectogenic.
pyogenic antigenic pathogenic splenic biogenic cryogenic eugenic mutagenic phrenic teratogenic allergenic photogenic irenic telegenic transgenic iatrogenic neurogenic androgenic hypoallergenic anthropogenic psychogenic calisthenic schizophrenic carcinogenic neurasthenic callisthenic hallucinogenic Words that almost rhyme with smectogenic
epidemic polemic pandemic totemic pfennig academic endemic systemic epistemic ischemic leukaemic nonacademic technic benthic derrick genetic poetic authentic generic acetic diabetic pathetic pelvic angelic ascetic ferric relic peptic allelic eutectic steric dietetic geodesic geodetic medic fetich pectic domestic energetic kinetic prophetic athletic majestic metric esoteric forensic phonetic septic apathetic aseptic centric cleric enteric hectic emetic empathetic sceptic tartaric turmeric hermetic acerbic lovesick paregoric bathetic magnetic aesthetic sympathetic dialectic geometric symmetric apologetic cosmetic epileptic esthetic mesenteric numeric alphabetic diuretic obstetric prosthetic frenetic isomeric psychedelic skeptic apoplectic chimeric dyspeptic hysteric peripatetic antithetic evangelic paramedic paraplegic polytechnic pyrotechnic diametric gametic parenthetic redbrick unauthentic exegetic copacetic electric arithmetic atmospheric synthetic anesthetic dielectric eccentric antiseptic asymmetric concentric eclectic parametric anaesthetic isometric phylogenetic unsympathetic barometric cybernetic kinesthetic monomeric ontogenetic photometric anorexic dyslexic geocentric inauthentic anorectic antipathetic cataleptic homiletic splenetic unaesthetic phrenetic dyslectic econometric egocentric ethnocentric geomagnetic ionospheric nonmagnetic thermometric unapologetic narcoleptic telekinetic nonathletic psychokinetic unesthetic cliometric psychometric antidiuretic biosynthetic colorimetric ferromagnetic neuroleptic nonparametric paramagnetic pharmacokinetic alphanumeric anthropocentric heliocentric radiometric onomatopoetic nonelectric electromagnetic volumetric parasympathetic photoelectric photosynthetic isoelectric piezoelectric stoichiometric trigonometric hydroelectric